white eye-spot of adult a good field mark (California; 2006-08-13)
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Cassin's Auklet
Ptychoramphus aleuticus
Native Range:
North America
Notes:
a small dark alcid that nests in excavated burrows and crevices on islands off California and British Columbia; forages by surface-diving at sea; unlike many other alcids, lacks a distinctive breeding plumage.
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